Filter



(No Model.)

A. L. BUSH 8.-. W. C. CLARK.

FILTER.

No. 421,238. Patented Feb. 11,1890.

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UNITED STATES PATENT OEEICE.

ANDREV LJBUSII AND IVILLIAM C. CLARK, OF VESTFIELD, MASSACHUSETTS.

FILTER.

SPECIFICATION forming part of Letters Patent No. 421,238, dated February 11, 1890.

Application tiled June 6, 1889. Serial No. 313,260. (No model.)

To cl/ZZ whom it may concern.:

Be it known that We, ANDREW L. BUSH and lViLLIAM C. CLARK, citizens o f the United States, residing at lVestfield, in the county of Hampden and State of Massachusetts, have invented new and useful Improvements in Filters, of which the following is a specification.

This invention in filtering mediums e011- sists in filtering-bodies of any suitable form and size made from particles of emery, corundum, or similar material by the admixture therewith of vitrifiable substances; and the invention further consists in the combination, with a suitable filtering-case adapted to receive and permit the discharge therefrom of liquid, of one or more filtering-bodies made from particles of emery, corundum, or similar material by the admixture therewith of vitrifiable substances.

By the aid of the accompanying drawings, the presentinvention in filtering medi ums and apparatuswill be more particularly and fully describeddfgure l being a central vertical sectional view of a filtering tank or case embracin gtherein a series of filtering-disks of vitried emery or corundum. Fig. 2 is a perspective view of one of said filtering-disks as employed in the above-named filtering' apparatus.A Fig. 3 is a central vertical sectional View of a filtering-lubricator, the filtering medium comprised therein being a block of porous vitriiied emery or corundnm, and Fig. et is a perspective view of the last-named block, a part thereof being shown as broken out and in section.4 l

In the'n'ianufacture of the filtering medium bodies the emery or corundum and the vitrifying substances-rsuch as alumina, silicate of soda, or similar Well-known substances-are mixed together into a moist condition and while in a pasty state molded into blocks or disks of suitable size, the same being then dried and finally exposed to such a degree of heat in a kiln or oven as will produce the vitrifaction of said substances which constitute thebinding elements as above mentioned,

. that cause the adhesion et the particles of emery or corundum. Said vitriiiable mateblock will be of a porous nature uniformly throughout.

In Figs. 2 and -t desirable forms ot the filtering-blocksare shown, although it will be apparent that innumerable other forms may also be advantageously employed, and the application of the form of the block shown in Fig. 2 is illustrated in Fig. l, in which A is a cylindrical tank or filter case, having a perforated bottom o, below which is a secondary tank B, and said upper tank is provided with an axial post l), on which is placed one above another a series of said filtering-blocks or disks ai, which have axial pert'orations therein for the passage thereof over said post, said disks peripherally fitting the inner wall of said tank, and preferably separated the one from another by washers d.

The above-described filtering apparatus, while eminently advantageous for the filtration of water, is especially applicable for the filtration of oil, more particularly that which has been once used and contains particles of metal, chips, and dirt, and in the percolation of the oil through said filtering medium all the. said particles, chips, dac., will be arrested by the said porous vitriiied filtering-body.

In Fig. 3 the application of one of the filtering blocks to a lubricator is shown, in which the axial stem f, projecting downwardly from the lower end of the chambered lubrieator-bedy A', is ehambered, as yat g, into which is fitted said block, which in this case is of cylindrical form, as shown at y..

Vhat we claim as our invention is I. A filtering medium consisting et particles et emery or corunduin and a vitrifiable substance, whereby said particles are held together with interstiees therebetween, substantially as described.

l 2. A :filtering apparatus consisting of a case or tank having an inlet and an outlet, and a filtering-body in said tank bet. Teen its inlet and outlet, consisting of particles of emery or corundurn and a vitriiiable substance, whereby said particles are held together with interstces therebetween, substantially as described.

ANDREW' L. BUSH. VILLIAM C. CLARK.

Witnesses:

WM.' S. BELLoWs, G. M. CHAMBEELAIN. 

